The NGS Data Sheet
See file dsdata.pdf for more information about the datasheet.
PROGRAM = datasheet95, VERSION = 8.12.5.19
Starting Datasheet Retrieval...
1 National Geodetic Survey, Retrieval Date = FEBRUARY 17, 2025 13:41:23 EST
DJ8985 ***********************************************************************
DJ8985 HT_MOD - This is a Height Modernization Survey Station.
DJ8985 CORS - This is a GPS Continuously Operating Reference Station.
DJ8985 DESIGNATION - GALVESTON 8771510 CORS ARP
DJ8985 CORS_ID - TXGV
DJ8985 PID - DJ8985
DJ8985 STATE/COUNTY- TX/GALVESTON
DJ8985 COUNTRY - US
DJ8985 USGS QUAD - GALVESTON (2019)
DJ8985
DJ8985 *CURRENT SURVEY CONTROL
DJ8985 ______________________________________________________________________
DJ8985* NAD 83(2011) POSITION- 29 17 06.47431(N) 094 47 21.45378(W) ADJUSTED
DJ8985* NAD 83(2011) ELLIP HT- -16.114 (meters) (06/??/19) ADJUSTED
DJ8985* NAD 83(2011) EPOCH - 2010.00
DJ8985* NAVD 88 ORTHO HEIGHT - **(meters) **(feet) NOT PUB
DJ8985 **This station is in an area of suspected vertical motion (see below).
DJ8985 ______________________________________________________________________
DJ8985 NAVD 88 orthometric height was determined with geoid model GEOID03
DJ8985 GEOID HEIGHT - -26.563 (meters) GEOID03
DJ8985 GEOID HEIGHT - -26.601 (meters) GEOID18
DJ8985 NAD 83(2011) X - -464,834.064 (meters) COMP
DJ8985 NAD 83(2011) Y - -5,547,994.956 (meters) COMP
DJ8985 NAD 83(2011) Z - 3,101,496.096 (meters) COMP
DJ8985
DJ8985 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DJ8985 Standards:
DJ8985 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DJ8985 Horiz Ellip SD_N SD_E SD_h (unitless)
DJ8985 -------------------------------------------------------------------
DJ8985 NETWORK 0.16 0.44 0.06 0.07 0.23 0.07781300
DJ8985 -------------------------------------------------------------------
DJ8985
DJ8985.The coordinates were established by GPS observations
DJ8985.and adjusted by the National Geodetic Survey in June 2019.
DJ8985
DJ8985.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DJ8985.been affixed to the stable North American Tectonic Plate.
DJ8985
DJ8985.The coordinates are valid at the epoch date displayed above
DJ8985.which is a decimal equivalence of Year/Month/Day.
DJ8985
DJ8985.Due to the release of the International GNSS Service (IGS) 2014
DJ8985.realization of the International Terrestrial Reference Frame of 2014
DJ8985.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DJ8985.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DJ8985.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DJ8985.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DJ8985.currently published epoch of 2010.00.
DJ8985
DJ8985.Additional information on MYCS2 is available at
DJ8985.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DJ8985
DJ8985.** This station is in an area of suspected land subsidence, uplift, or
DJ8985.** crustal motion. NGS recommends this and all published orthometric
DJ8985.** heights in such areas be validated before use as vertical control.
DJ8985.** Click here to see a list and map of nearby stations with valid
DJ8985.** orthometric heights. Note: While datasheets are updated in real-time,
DJ8985.** updates to archived datasheets and the SE TX Valid OH map occur
DJ8985.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DJ8985.** heights as vertical control as they are deemed unreliable.
DJ8985.**
DJ8985.** If an established orthometric height is unavailable in the survey control
DJ8985.** section, it should be considered suspect. To view suspect heights,
DJ8985.** (in the superseded section), select 'Include suspect heights in vertical
DJ8985.** motion areas' box from the datasheet retrieval page.
DJ8985
DJ8985.Significant digits in the geoid height do not necessarily reflect accuracy.
DJ8985.GEOID18 height accuracy estimate available here.
DJ8985
DJ8985.The PID for the CORS L1 Phase Center is DJ8986.
DJ8985
DJ8985.Click photographs - Photos may exist for this station.
DJ8985
DJ8985.The XYZ, and position/ellipsoidal ht. are equivalent.
DJ8985
DJ8985.The ellipsoidal height was determined by GPS observations
DJ8985.and is referenced to NAD 83.
DJ8985
DJ8985. The following values were computed from the NAD 83(2011) position.
DJ8985
DJ8985; North East Units Scale Factor Converg.
DJ8985;SPC TXSC - 4,168,261.429 1,009,011.490 MT 0.99986362 +2 03 46.4
DJ8985;SPC TXSC -13,675,371.04 3,310,398.53 sFT 0.99986362 +2 03 46.4
DJ8985;UTM 15 - 3,240,904.279 326,188.604 MT 0.99997279 -0 52 31.7
DJ8985
DJ8985! - Elev Factor x Scale Factor = Combined Factor
DJ8985!SPC TXSC - 1.00000253 x 0.99986362 = 0.99986615
DJ8985!UTM 15 - 1.00000253 x 0.99997279 = 0.99997532
DJ8985
DJ8985_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RUN2618840904(NAD 83)
DJ8985
DJ8985 SUPERSEDED SURVEY CONTROL
DJ8985
DJ8985 ELLIP H (06/27/12) -16.118 (m) GP(2010.00) 0 0
DJ8985 NAD 83(2011)- 29 17 06.47438(N) 094 47 21.45374(W) AD(2010.00) c
DJ8985 NAD 83(2011)- 29 17 06.47429(N) 094 47 21.45375(W) AD(2010.00) c
DJ8985 ELLIP H (08/??/11) -16.118 (m) GP(2010.00) c c
DJ8985 NAD 83(CORS)- 29 17 06.47430(N) 094 47 21.45421(W) AD(2002.00) c
DJ8985 ELLIP H (01/??/08) -16.105 (m) GP(2002.00) c c
DJ8985
DJ8985.Superseded values are not recommended for survey control.
DJ8985
DJ8985.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DJ8985.See file dsdata.pdf to determine how the superseded data were derived.
DJ8985
DJ8985_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DJ8985
DJ8985 STATION DESCRIPTION
DJ8985
DJ8985'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DJ8985'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DJ8985'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DJ8985'ACCESSIBLE AT THE WORLDWIDE WEB.
DJ8985'https://geodesy.noaa.gov/CORS/data.shtml
DJ8985'https://geodesy.noaa.gov/CORS
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